Subject: Re: [sloan-25mlog 2118] 2.5m obslog 20150211 (SJD 57065)
From: Kaike Pan
Date: Thu, 12 Feb 2015 08:19:59 -0700
With pin in, =93axis init=94 will clear AZ and rot axes but not alt. =
Since tcc command doesn=92t
check status of axes, one can move the telescope in AZ and rotator. =
However, as
you said, SOP commands which the =93telescope control=94 uses will fail.=20=
-kaike
> On Feb 12, 2015, at 8:00 AM, John K. Parejko  =
wrote:
>=20
> Is this a common procedure, to zero the rotator with the pin in via =
gotoInstrumentChange?
>=20
> The only time SOP can complete a TCC command with not all axes free is =
when slewing up from below 15=BA. In all other cases (as with this one), =
if one axis does not clear after axis init, the SOP command fails. Since =
the pin was in, Alt did not clear (see the messages).
>=20
> I think this is the behavior we want. SOP has no way to tell whether =
an axis is supposed to clear when a command is issued, so the default =
assumption (except for slews up from 15=BA, as above) is to fail if all =
axes aren't ready.
>=20
> John
>=20
> On 12Feb 2015, at 06:29, hjbrew@apo.nmsu.edu wrote:
>=20
>> %... Test slews (121,30, 121,90, 151,90, rota =3D 0, 50, 0)
>> We had two slight issues:
>> a) =46rom stow we brought the telescope to inst change position with =
the=20
>> "telescope controls" box. It worked fine. Then we moved the telescope =
to=20
>> 151,90,40, with the pin in. When we hit the "Inst Change" button to =
go back to=20
>> 121,90,0, it failed:
>>=20
>> 00:00:05 APO.telescope 555 sop f text=3D"Failed to slew to instrument =
change"
>> 00:00:05 CmdDone: APO.telescope 555 sop gotoInstrumentChange
>>=20
>> Then tcc command tcc track 121,90 mount /roty=3D90 /rotta=3Dmount =
worked fine.=20
>=20
>=20
> --
> *************************
> John Parejko
> john.parejko@yale.edu
> http://www.astro.yale.edu/~jp727/
> 203 432-9759
> JWG 465
> Department of Physics
> Yale University
> New Haven, CT
> **************************
>=20
>=20
>=20
>=20
>=20
>=20
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